mikemccand commented on a change in pull request #1155: LUCENE-8962: Add
ability to selectively merge on commit
URL: https://github.com/apache/lucene-solr/pull/1155#discussion_r373738425
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File path: lucene/core/src/java/org/apache/lucene/index/MergePolicy.java
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@@ -526,6 +526,19 @@ public abstract MergeSpecification findForcedMerges(
public abstract MergeSpecification findForcedDeletesMerges(
SegmentInfos segmentInfos, MergeContext mergeContext) throws IOException;
+ /**
+ * Identifies merges that we want to execute (synchronously) on commit. By
default, do not synchronously merge on commit.
+ *
+ * Implementers of this method should use isMergingSegment to exclude any
already-merging segments from the returned
+ * {@link MergeSpecification}. If a segment already registered in a merge is
returned, then the commit will fail.
Review comment:
OK I agree to explosive failure! Less trappy.
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